• Unlike ordinary three pass drums that can over-dry, QuadPass dries each particle of material at its individual drying rate, regardless of size, density or moisture.
  
  
• Patented four-pass design spreads out feed solids, allowing the hot gas to contact nearly all particle surfaces. Optimal heat distribution prevents clumping and generates a more uniformly dried product.
  
  
• Feed particles are exposed to hot gas as they fall, but not while they are resting in the flighting. This exposure to heat, followed by a brief rest, greatly reduces the amount of VOCs generated.
  
  
• QuadPass provides better color in finished product because the solids are less likely to be charred or over-dried.
  
  
• A unique feed arrangement all but eliminates operating dryer drum fires. Because wet feed enters the drum off-center, away from the “blowtorch” of hot gases, it’s much less likely to catch fire.
  
  

Download QuadPass brochure